On Mon, Aug 04, 2008 at 03:49:01PM +0100, David Woodhouse wrote: > > And even for people who don't care about that, it doesn't look > particularly good. It looks like btrfs would need either to keep setting > up a crypto context and then tearing it down, or have a pool of > long-standing contexts and do some kind of locking on them -- neither of > which seem particularly optimal compared with just calling into > libcrc32c.
No you don't have to set things up every time you use crc32c. The crypto interface lets you have a single tfm that can be used by multiple users simultaneously. For ahash algorithms all the state is stored in the request which can stay on the stack. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
